Docker的安装

Ubuntu安装

# 卸载旧版本
sudo apt remove $(dpkg --get-selections docker.io docker-compose docker-compose-v2 docker-doc docker-buildx podman-docker containerd runc | cut -f1)

# 安装依赖
sudo apt install -y ca-certificates curl

# 添加docker官方GPG key
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

# 设置apt源，使用中科大docker-ce镜像
sudo tee /etc/apt/sources.list.d/docker.sources <<EOF
Types: deb
URIs: https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu
Suites: $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}")
Components: stable
Architectures: $(dpkg --print-architecture)
Signed-By: /etc/apt/keyrings/docker.asc
EOF

# 安装Docker
sudo apt update -y
sudo apt install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin docker-buildx-plugin

CentOS安装

# 卸载旧版本
sudo dnf remove -y docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine podman runc

# 安装dnf-plugins-core软件包，并设置稳定的存储库
sudo dnf -y install dnf-plugins-core
sudo dnf config-manager --add-repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo
sudo sed -i 's|download.docker.com|mirrors.ustc.edu.cn/docker-ce|g' /etc/yum.repos.d/docker-ce.repo

# 安装Docker
sudo dnf -y install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

启动Docker

systemctl start docker

开机自启

systemctl enable docker

配置镜像加速源及开放2375端口

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
    "hosts": ["fd://", "tcp://0.0.0.0:2375"],
    "registry-mirrors": [
        "https://docker.m.ixdev.cn",
        "https://docker.1panel.live"
    ]
}
EOF

# 创建 systemd 覆盖配置
sudo mkdir -p /etc/systemd/system/docker.service.d
sudo tee /etc/systemd/system/docker.service.d/override.conf <<EOF
[Service]
ExecStart=
ExecStart=/usr/bin/dockerd
EOF

sudo systemctl daemon-reload
sudo systemctl restart docker

通过运行hello-world映像来验证Docker引擎是否安装正确

docker run hello-world